# CVE-2026-48710

> Starlette is a lightweight ASGI framework/toolkit. Prior to version 1.0.1, the HTTP `Host` request header was not validated before being used to reconstruct `request.url`. Because the routing algorithm relies on the raw HTTP path while `request.url` is rebuilt from the `Host` header, a malformed header could make `request.url.path` differ from the path that was actually requested. Middleware and endpoints that apply security restrictions based on `request.url` (rather than the raw `scope` path) could therefore be bypassed. Users should upgrade to a version greater than or equal to version 1.0.

- **CVSS:** 6.5 (MEDIUM)
- **EPSS:** 0.0%
- **CWE:** CWE-444

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-48710
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